Solutions by everydaycalculation.com
1st number: 10 2/4, 2nd number: 11 1/4
424 + 454 is 874.
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Related: 84/4+45/4 42/4+90/4 42/8+45/4 42/4+45/8 42/12+45/4 42/4+45/12 42/20+45/4 42/4+45/20 42/28+45/4 42/4+45/28
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